Heel-cutter



C. S. REAMY.

HEEL CUTTER.

APPLICATION FILED MAY 12, !9l9- I 4 2 7 Patented June 22, 1920.

' 2 SHEETS-SHEET L,

firm/0r C/mJ/ap/zer J. Rea/779 2 L TM 26 27 23 QZE C. S. REAMY.

HEEL CUTTER.. APPLICATION men MAY 12. 1919.

2 SHEETSSHEET 2.

firm/0r (Mir/0,00 5. Emmy UNITED STATES PATENT OFFICE.

CHRISTOPHER S. REAMY, OF LOS ANGELES, CALIFORNIA.

HEEL-CUTTER.

Specification of Letters Patent. Patented J 11113 22, 1920,

Application filed May 12, 1919. Serial No. 296,452.

To all whom it may concern:

Be it known that I, CHRISTOPHER S. REAMY, a citizen of the United States, re-

siding at' Los Angeles, in the county of Los' machinery. The invention has for its object the provision of a mechanism of extreme simplicity, adapted to be driven by power, and requiring, for an operation of cutting, but a single manual operation under control of the operator.

In devices of this character formerly in use, it has been common to employ a powerdriven'cutter, such as a saw, and to employ means for applying or divertin the application of power to the cutter. uch devices as heel cutters are used'intermittently, and each use is of only a fewseconds duration. If the operator is required to first start a driving motor or first throw a connecting belt or clutch, he loses a considerable amount of time in such preliminary operation prior to the actual operation of cutting. It is one of the specific objects of the present invention' to provide a clutch mechanism which is operated by virtueof the same operation which throws the saw into contact with the heel to be cut; so that the operator goes through only a single operation in order t accomplish his desired results.

\Vith these objects in 'view, the invention will be best understood from the following detailed description of a specific and preferred form of the invention, reference for this purpose being had to the accompanying drawings in which- Figure 1 is aside elevation of my improved machine; Fig. 2 is an elevation with parts in section taken as indicated by line 2-2 on Fig. 1; Fig. 3 is a detail View taken as indicated by line 3-3 on Fig. 2; and Fig. 4: is a detail section taken as indicated by line et-it on Fig. '2. V

The machine herein illustrated is somewhat of the general character shown and described in my United States Letters Patent No. 1,287,748, dated December 17,

- 1918, entitled Heel cutter. For the purpose of adapting my present particular invention to a heel cutter I may utilize any suitable means for clamping and holding the heel of a shoe, such as the means which is shown. in my said Letters Patent. This clamping and holding means may embody a heelclamp C movably and adjustably mounted on a base B supported on a bracket- B which is mounted on the frame F of the machine. By means of this clamp a heel may be clamped and held and adjusted in any desired position relative to the circular saw or other cutter 10. The saw is carried on a saw arbor 11 mounted in a bearing 12. Bearing 12 is carried on the outer end of a swinging arm 13 which in turnis mounted upon a sleeve 14 which swings around a hori zontal shaft 15 mounted in bearings 16 in the upper ends of the frame F. The frame .F may be suitably constructed with a base F and two upwardly extending pedestals which are cross-connected by a web F just below the bearings 16. v

Shaft 15 is a non-rotating shaft and carries, at. its outer end, a power transmitting member of any suitable sort. In the present case, for the purpose of driving my machine through the medium of a belt connection with a motor or other source, I mount a belt wheel 20 on the outer end of shaft 15. Shaft '15 has areduced end portion 21 and thebelt wheel is rotatively mounted on this reduced end portion and is held longitudinally in place by a cap screw 22, or by any other suitable means which will serve the purposes; so that the belt wheel may rotate on the shaft but must move longitudinally with it. The hub 23 of the belt wheel has thereon clutch teeth 24, the wheel hub thus forming one-half of a clutch. The other half of the clutch is formed by clutch teeth 25 on the hub of a gear 26 which is slidably and rotatively mounted upon shaft 15, so that the gear can rotate on the shaft and so that the shaft may be moved longitudinally without moving the gear.

When the parts are in the position shown in the drawings, the belt wheel 20 with its clutch half 2-1 may rotate without rotating the gear 26. Gear 26 is prevented from accithe larger gear 30 which gear 26 drives. Gear 30 is mounted upon the end of saw arbor 11 and will drive the saw arbor and the saw whenever that gear is rotated.

A handle H is mounted upon the saw arbor bearing 12, and by the use of the handle the operator may move the saw in the direction indicated by the arrow in Fig. 1 toward and to the position of the saw indicated in dotted lines in' Fig. 1. In this position the saw will have cut through a heel held in the clamp C. Now it is one of the more specific objects of this invention to provide a mechanism, also simple and thus in keeping with the simplicity of the whole machine, for throwing the clutch halves 2-1 and 25 into engagement when the saw is moved toward its position to the right in Fig. 1. This I accomplish by moving longitudinally the shaft 15 and the clutch half 24. The shaft 15 does not rotate. The belt wheel 20 and gear 26 rotate on the shaft. A pin 30 is screw-threaded at its end at 31 into shaft 15, projecting radially from the shaft and projecting through a cam slot 32 in sleeve 1%. The outer'end of pin 30 plays in a horizontal slot 33 in a small plate 34: attached to the web F It will be seen that pin. 80 prevents shaft 15 from rotating.

\Vhen the saw 10 is thrown over tothe right in Fig. 1, the cam slot 32 acts upon pin 30 to immediately move that pin, and shaft 15, to the right in Figs. 2 and 3. This movement takes place before the saw has moved very far and before it has moved far enough to come into contact with a heel held in clamp C. This movement of shaft 15 to the right causes the engagement of clutch half 2st with clutch half 25 and causes gear 26 to be immediately driven, driving the saw 10. Thus, before the saw reaches theheel, it begins to be driven; its speed of rotation depending upon the speed of rotation of.

belt wheel 20 and the ratio of gears 26 and 30. Further movementof the saw toward the right in Fig. 1 causes the straight portion 32 of slot 32 to engage the roller 30 on the pin 30; and thus further movement of the saw, during its cutting action on the heel, may be had without causing any further longitudinal motion of shaft 15. When the cutting operation is finished and the saw is moved back to its original position, the clutch halves are thrown out of engagement just before the saw comes to itsfinal position. The machine is thus left completely at rest after each heel cutting operation; and no separate motion or operation is required of the operator in order to put the saw into the sawing motion prior to the next cutting operation.

Suitable stops may be provided at 4:0 and 41 to limit the back movement and the forward movement of the saw and other swinging parts. When the machine is at rest, the

swinging parts are supported by the stop 40 which bears against web F The simplicity and eflicascy of my device are its prime features. It is to these features, and the feature of the clutch operation herein described, that the following claims are most particularly directed. It will be seen, however, that my invention is not limited to the specific details herein set forth; these specific details having been described for the purpose of rendering my invention fully intelligible rather than for the purpose of limiting it to details. 7

Having described the preferred form of my invention, I claim:

1. In a cutting device, a work holder, :1 saw swingingly mounted to move to and from the workholder, a non-rotating shaft upon which the saw is swingingly mounted, a gear revolublymounted upon said shaft, gearing connection between the saw and said mentioned gear, a power driven element rotatively mounted on said shaft to move longitudinally therewith, said power driven element and said mentioned gear having interengaging clutch parts adapted to be engaged and disengaged by longitudinal movement of saidshaft, and means whereby swinging movement of the sawcauses longitudinal movement of said shaft.

2. In a cutting device, the combination of a frame having bearings therein, anon-rotative shaft slidably mounted in said bearings, a sleeve rotatively mounted-upon said shaft between said bearings, a radially projecting arm carrying a bearing sleeve mounted upon said first mentioned sleeve, a saw arbor in said bearing sleeve and carrying a saw, a 'gear on said saw arbor and an intermesh-ing gear rotatively and slidably mounted upon said longitudinally movable shaft, a'power driven element rotatively mounted upon said longitudinally movable shaft and adapted to move longitudinally with said shaft, said element and said second mentioned gear having engaging clutch parts adapted to be engaged and disengaged by longitudinal movement of said shaft, and means actuated by the rotation of said first mentioned sleeve on said longitudinally movable shaft to move said shaft longitudinally when thesaw is swingingly moved. 7

3. In a cutting device, the combination of a frame having bearings therein, a nonrotative shaft slidably mountedin said bearings, asleeve rotatively mounted upon said shaft between said bearings, a radially projecting arm carrying a bearing sleeve mounted upon said first mentioned sleeve, a saw arbor in said bearingsleeve and carry ng a saw, a gear onsaid saw arbor and an intermeshing gear rotatively and slidably mounted upon said longitudinallymovable shaft, a power driven element rotatively mounted upon said longitudinally movable shaft and adapted to move longitudinally with said shaft, said element and said second mentioned gear having engaging clutch parts adapted to be engaged and disengaged by longitudinal movement of said shaft, said first mentioned sleeve being provided with a cam slot, a radial pin mounted in said longitudinally movable shaft and proj ecting through said cam slot, and a slotted plate mounted on the frame having a longitudinal slot through which the outer end of the pin projects, said cam slot having a part extending diagonally to the length of the sleeve and a part extending circumferentially around the sleeve, so that, upon swinging movement of the saw and of the sleeve, said shaft is first moved longitudinally, and then during subsequent swlnging movement of the saw, said shaft is held stationary.

4. In a cutting device, a non-rotating shaft, a saw swingingly mounted on the shaft, a gear on the shaft and driving connection between said gear and the saw, a .power driven element on the shaft, said gear and power driven element having interengaging driving means adapted to be engaged by relative longitudinal movement, and means whereby swingin motion of the saw causes relative longitudinal movement of the driving means and the gear.

In witness that I claim the foregoing I have hereunto subscribed my name this 2d day of May, 1919.

CHRISTOPHER S. REAMY. lVitness:

VIRGINIA I. BERINGER. 

